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Will this kit raise my compression or, is it designed to work with high compression pistons?

A shopper
on Oct 20, 2017

BEST ANSWER:I cannot verify that it will raise compression because I never did a check. However, when I first did a top end job on my '82 XLH back in the mid eighties, i put in the thinner HD gasket with .010 over HD pistons and had no issues. It also did not run noticeably quicker. This time I used the thin gasket from Dennis Kirk with .020 over Keith Black pistons. Definitely runs better and sounds very sweet with no changes to exhaust. You need to check that the head to cylinder gap with no gasket is either zero (no gap) or much smaller than the gasket thickness to properly seal.Good luck,JP

BEST ANSWER:I cannot verify that it will raise compression because I never did a check. However, when I first did a top end job on my '82 XLH back in the mid eighties, i put in the thinner HD gasket with .010 over HD pistons and had no issues. It also did not run noticeably quicker. This time I used the thin gasket from Dennis Kirk with .020 over Keith Black pistons. Definitely runs better and sounds very sweet with no changes to exhaust. You need to check that the head to cylinder gap with no gasket is either zero (no gap) or much smaller than the gasket thickness to properly seal.Good luck,JP